Mixing machine



June 22 1926.

W. R. GRACE MIXING MACHINE INVE TOR gw 7 M.-

ATTORNEYS,

June 22 1926. 1,590,021

W. R. GRACE MIXING MACHINE Filed Dec. 2, 1921 2 Sheets-Sheet 2 0W4 i wwATTORNEYS Patented June 22, 1926.

WILLIAM GRACE, OE BRQOK LYIT, NEW YQRK. AS$EGHOB TO STEVENS AYLSWOR-THCOMPANY, or new YORK, N. Y.,

noonronA'r on or NEW YORK.

MIXING MACHINE.

Application filed December 2,1921. Serial No. 519,360

My inyentionrelates to mixing machines and is particularly adapted foruse machines for mixing dry materials.

The V principal object of the invention is the product-ion of a novelmachine of siniplieity of construction Which be adapted to thoroughlyandcompletely pei*-. form its mining function.

Other and further objects and advantages of the invention will appearfrom the accompanying descriptionfthe invention consisting in the novelparts and combinations thereof hereinafter more particularlydescribedand thenspecified in the claims.

By means of 11137 invention I have pro: duc ed a machine Which isespecially adapted for the 'niixing 'ofdrugs Where one of the materialsis exceedingly poisonous and where it is essential that thefini shedmixed product should. have the poisonous drug evenly and thOlOughlydistributed throughout the entire mass. The construction of n y deviceeliminates the possibility of some of the poisonous substance adheringto the ma chine while the mixing operation is being performed andthenbeing discharged in an unmixed condition in. a batch or a Wad; so tospeak, which would seriously endanger the life of one who isunfortunateenough to use that particularportion of the materialscontaining the highly concentrated, unu'iixed. poisonous substance.

The invention is equally useful in the standardizing of dyes Where it isimperative that the mixed materials be absolutely uniform throughout theentire mass as any small portion ofthe dye or of the material used instandardizing the dye which might adhere tov the machine during themixing operation would produce a variation in color in the dyed goodswhich of Icourse is objectionable.

A. practical is illustrated ings m nia;

1 is aii end elevation of the machine.

embodiment the inyention 2 is a front eleration (partly fin" section)thereof.

3 sa section taken through a portion of the mixing chamber or cylinder.

e l' ler i p i of pet'o'ft ie allele w te. its j' ee l e device shoi nin Fig. 8

24 in the periphery in the I aceon p anying draw} Fig. is an endelevation of ,a modifiedform of machine.

Fig. 6'is a front elevation (partly in section) of the'modification."

' Referring detailto the" drawings:

1 indicates a mixing chamber comprising a cylinder haying end plates 2-detachablyf bolted "thereto; "said'*end plates having hollow hub members3 secured thereto, which are journs'illedin bearings 4 mounted onsuitable standards 5, 5Q" GindicateS a shaft extending longitudinallythrough the cylinder 1 and through the hub members 3 which carries ononeend thereof a gear 7 While on the other end it carries a clutchmember 8 fast thereon and a combined clutch member and sprocket 9loosely mounted thereon.

10 indicates a shaft mounted in bearings on the standard 5' and, astandard 11 said shaft carrying the pulley Wheel 12 and idler 12" andagear 13 on the end thereof. Said gear 13 meshes wit-ha gear 14 on ashaft15 suitably journalled in the standard 5 While the gear Tmeshes vWith 'agear"16 carried on the end of said shaft 15. The pulley 12 is adapted tobe connected by a belt (not shown) to any convenient source of power forrotating said pulley, a'conventional form of belt-shifter being shown at17 for shifting the" belt'to the idler 12 when so desired. 18 indicatesa shaft or counter-shaft journalled in bearings on standard '5 and on astandard 19. 20 and a sprocket 21 suitably connected by a chain 22 Withthe sprocket portion of the member 9. The sprocket 21 is provided withan extending annular portion 23 prefera-bly integral therewith andhaying openthereof'. The gear; 20 meslieslwith alarge gear 20 carried bythe hub member 8 adjacentthe" left side'or end ofthe machine. i u

When absolutel and reliable vmixing isto be effector 'itisdesirabletoobtain sjaii'nples;

Said shaft carries a gear manner. by unloosening the-thumb nuts 2 mixedmaterial wi d in s:

cit & 26 plu ging er closni means of the t-l'iunib 1-u -.h the stopperae opening by 29 threading over 2?. It Jlate 1s vidcd 2 i one 0 boltsfinereby the dopp r may moved iron the ooenine', ii an oh and withoutthe necessity of removing the plate from the other bolt.

The mixing chamber or cylinder is filled or partially filled with thematerials to be mixed through a somewhat enlarged annu lar opening orinlet provided with an upstanding side Wall 31 suitably bolted to tl 0cylinder and adapted to be closed by a plug 32 which is detachablysecured to the wall any desirable manner. Directly opsaid inlet 1 haveprovided an outlet opt also having an upstanding Wall 83 s1, i oundingthe same and secured'to the cyling closed by a inder. said outletopening oe is operated ren'iovable plug 34: Which ina i by a lever arm35 forming no part of my invention. .lt will be noted that the orsurfaces of the plugs and S-land or" the stoppers 26 flush with theinteriorsuu the cylinder so as to preclude the y oi any of the materi.ls contained cylinder from dropping or falling n-to recesses poc 4 Wherethey would not be acted on.

36 indicates blade me; 11

the left-hand side of the .i i

cylinder and innning'in a spiral h from the lel =hand end o1 the shaftto a poin on the opposite Side of the shaft adjacent 'tl e cen ralportionthereof. These blade members are separated from eachcther andhave relatively small spaces thercbetween and constitute a left-handhelical spiral. 37 iiidicates separate blade members with spacestl'ierebetiveen and attached to the right-hand side of theshatt 6 Withinthe cylinder and running); in a spiral line' from the right-hand end ofthe shaft to a pointon-the opposite side of the shatt adjacent thecentral portion thereof. The blade members 37 conch,-

ands

looked a inst movement.

.l lne s n-laces the pulley wheel 12 revolves the shaft r tates in anobvious manner, the motion being; iransmitted tln'ough gears 13, l i, 16and 7. It the clutch members 8 and 9 are in engagement it will beapparent that a rotation of the shaft Will also effect a rotaion of theo inner in an opposite direction, .ie notion being t .nsmitted from theshaft trough the sprocket portion of member 9, through .chaii 22,.sprocket 21, gear l gear PM. When it is not desired to c the cylinderthe clutch members 8 and 9 are disengaged.

Then the cylinder is charged with materials to be mixed :1 most thoroughand. oill ective mining is o tained by rotating both the shaiil: andcylinder each in a direction opposite to the other as has been xolained.The helical spirals heretofore described Wil sci )e the inner surface oithe cylinder and ti me to revolve to throw the materials trom the endsof the cylinder to the center thus hen the clutch members 8 and 9 arereleased from engagement: with. each other-the cylinder ceases to rotateas has been described. To loclt the cylinder in any desired position.however in order to facilitate the charging or discharging operatiom lhave prm'idet a locking rod 38 car ied by bracket 39 the end of which isadapted to enter any of the openings 2ain. the member whereby thesprocket 21.

the cylinder will be held or ri o ,a lhe rod 08 is interlocked. POSlilQll Will he near and obviously heldii absolute mining takingplace. byrotation of.

the. cylinder whcnthe toting.

In the modification shown in Figs. 5 and 6 I have provided separatemeans for rotating the shaft and cylinder each independently of theother. In the figures one of the hollow nub members of the cylinder isindicated at 42 and is suitably supported by the standard 413. The mainor cylinder shaft is indicated at 44.- and extends through the hollowhub member l2. Carried by said shaft is a gear 45 meshing with a worm 46on a shaft 47 journalled in suitable hearings on the side walls ofbracket 43. The said. shaft 41:7 carries a pulley and idler 4-8 and 4.9respectively connected by a belt (not shown) with a suitable source ofpower. Obviously when the pulley 48 rotates the main shaft 414 isrotated due to the connections described. 50 indicates a gear carried bythe hub mcn'iber 4C2 and meshing with a vorm 51 on a shaft 52 which likewise is journalled in hearings on the side members of bracket 43. Theshaft 52 also carries a pulley and idler 53 and 5% respectivelyconnected to a source of power. When the pulley 5;) rotates the cylinderis rotated as is obvious.

By using the worm gears of the modification, no additional latch or lockis necessary to lock the cylinder in any position as in the preferredform of the invention, as the worm will hold it against movement in anygiven position.

What I claim as my invention is 1. In an apparatus of the characterdescribed, a mixing chamber, spirally arranged sets of relatively wideflian-sl'iaped mixing blades rotatably mounted within said chamber, arotatable shaft for supporting said blades. said blades extending fromsaid shaft to points adjacent the walls of said chamber and having theadjacent edges thereof separated by relatively narrow spaces andangular-1y disposed throughout substantially their entire length, eachof said sets extending from an end of said chamber to one and the sameintermeoiate point in said chamber spaced from the ends thereof, thesets in the different ends of said chamber having the spiral arrangementthereof extending in rig 1t and left hand directions respectively, theangular disposition.

spirals are also roof said blades corresponding to thedirection of saidspiral arran 'ement, and the inner end blades of said ad scent d inter--media point extending in d.l t; rozn the rot: no. ..:is the co z. in, anapparatus of the character de scribed, a lon gitudii y disposedrotatable chamber, nr for introducing n ati-rial into said chamber, thewalls of said chan'zber being far d with a plurality of rel 'vely z n:...l s. openings s-apaced throughout the ion, 1 of said chamber, andclosures for aid openings, wnereby samples of the mixture within thechamber may be obtained at different points along said chamber.

3. In an apparatus of the character described, a mixing chamberpro'iiided with inlet and outlet openings and with a plurality ofseparated sampling openings in the "all thereof, removable plugs forsaid inlet and outlet openings having ends completely filling saidopenings and flush with the inner wall of the chamber, removablestoppers for said sampling openings having ends completely filling saidopenings and flush with the inner wall of the chamber, a shaft extendingthrough said chamber, mixing blades secured to said shaft and means forrotating said shaft.

4. In an apparatus of the character de scribed, a rotatable mixingchamber, a shaft extending therethrough, mixing members secured to saidshaft, means for rotating said shaft, clutch members on said shaft, asupport, a second shaft journalled therein, means connecting one of saidclutch members and said second shaft, means for looking said secondshaft against rotation and means connecting said second shaft and saidmixing chamber.

5. An apparatus of the character described including a chamber formedwith an opening, a plate normally closing said opening, a stoppersecured to said plate and extending into said opening and means forretaining said plate in position.

6. An apparatus of the character de scribed including a chamber formedwith an opening, a plate normally closing said open ing, a stoppersecured to said plate and GX tending into said opening and a boltextending through said plate, said plate being; formed with a slot, asecond bolt extending through said slot and means associated with boththe said bolts and bearing against said plate for retaining the latterin position.

'4'. In an apparatus of the character described, a mixing chamber, ashaft extending through the same, means for rotating said shaft, acounter-shaft, means connecting both the said shafts one to the other,means connecting said counter-shaft with said mixing chamber whereby thelatter may be rotated when the firs am h t is rotating and means wherebysaid countershaft may be locked against rotation.

8. In an apparatus of the character described, a mixing chamber, a shaftextends ing through the same, means for rotating said shaft, acounter-shaft, means connecting both the said shafts one to the other,means connecting said counter-shaft with said mixing chamber whereby thelatter may be rotated when the first named shaft is rotating meanssecured to said counter-shaft and providing a member formed with anopening and a pin adapted to enter said opening to lock said countershaftagainst rotation.

9. In an apparatus of the character de scribed, a cylinder, a shaftextend ng through said cylinder, agitating means attached to said shaft,means whereby said shaft and cylinder may be rotated in oppositedirections and means for locking one of said members against movement.

Signed at New York in the county of New York and State of New York this30th day of November A. D. 1921.

WVILLIAM R. GRACE.

